Granby
Crater Name | Location | Latitude | Longitude | Diameter (km) | Age (Ma) | Exposed | Drilled | Target Rock** | Bolide Type*** |
---|---|---|---|---|---|---|---|---|---|
Granby | Sweden | N 58° 25' | E 14° 56' | 3 | ~ 470 | N | Y | M | - |
References |
Abels A., Plado J., Pesonen L.J., Lehtinen M., The impact cratering record of Fennoscandian - a close look at the database, 2002. |
Alwmark, C. Shocked quartz grains in the polymict breccia of the Granby Structure, Sweden; verification of an impact. Meteoritics & Planetary Science, vol.44, pp.1107. 2009. |
Grahn, Y., Nolvak, J and Paris,F., Precise chitinozoan dating of Ordovician impact events in Baltoscandia, Journal of Micropalaeontology, v.15, p.21-35. 1996. |
Grahn, Y., Nolvak, J., Chitinozoan dating of Ordovician impact events in Sweden and Estonia. A preliminary note. Geologiska Föreningens I Stockholm Förhandlingar, v. 115, pp. 263-264. 1993. |
Henkel, H., Ekneligoda, T.C., and Aaro, S. The extent of impact induced fracturing from gravity modeling of the Granby and Tvaren simple craters. Tectonophysics, vol.485, pp.290. 2010. |
Henkel, H., Pesonen, L. J., Impact craters and craterform structures in Fennoscandia. Tectonophysics, v. 216, pp. 31-40. 1992. |
Lindström, M., Ormö, J., Sturkell, E.F.F. and Törnberg,R., Geological information from Ordovician marine impact craters (abstract). GFF, v. 118, pp. A99-A100. 1996. |
Lindstrom M., Six Ordovician Craters, 1995. |
Ormo, J., Lindstrom, M., When a cosmic impact strikes the sea bed, Geol. Mag. V.137(1), p.67-80. 2000. |
Wickman F.E., Possible impact structures in Swedent, 1988. |
* pre-1977 K-Ar, Ar-Ar and Rb-Sr ages recalculated using the decay constants of Steiger and Jager (1977) Ages in millions of years (Ma) before present. ** Abbreviations: C - Crystalline Target; C-Ms - Metasedimentary Target; M - Mixed Target (i.e.sedimentary strata overlying crystalline basement); S - sedimentary target (i.e. no crystalline rocks affected by the impact event). From Osinski. G. R., Spray J. G., and Grieve R. A. F. 2007. Impact melting in sedimentary target rocks: A synthesis. In The Sedimentary Record of Meteorite Impacts, Geological Society of America Special Paper. Editors: Evans K. Horton W., King D., Morrow J., and Warme J. Geological Society of America: Boulder, in press. ***From Koeberl,C. Identification of meteoritic components in impactites. 1998, Koeberl, C. The Geochemistry and Cosmochemistry of Impacts. 2007 and PASSC Files. (IAB, IIIAB, IIIB, IIID - Iron Meteorite) |